Trucking tycoon battling Canadian government to maintain his priceless monopoly over the Detroit River border crossing. Owns Ambassador Bridge, conduit for 25% of commerce between U.S. and Canada; bridge handles 8,000 trucks a day, $100 billion worth of goods each year. Scrambling to build second bridge before Canada builds its own. Filed lawsuit to block construction, claiming Canuck plan will displace minority residents in U.S. Grew up poor in Detroit; wanted to be a doctor, but medical schools were loaded with returning WWII soldiers. Took job with father's gas station and small trucking operation. Used truck company's credit line to buy Warren Buffett's 25% stake in Ambassador Bridge 1979; acquired the rest later. Reported price tag: $30 million.